fixed entity service registry test

dao/src/main/java/org/thingsboard/server/dao/entity/DefaultEntityServiceRegistry.java

@@ -43,6 +43,9 @@ public class DefaultEntityServiceRegistry implements EntityServiceRegistry {
             if (EntityType.RULE_CHAIN.equals(entityType)) {
                 entityDaoServicesMap.put(EntityType.RULE_NODE, entityDaoService);
             }
+            if (EntityType.CALCULATED_FIELD.equals(entityType)) {
+                entityDaoServicesMap.put(EntityType.CALCULATED_FIELD_LINK, entityDaoService);
+            }
         });
         log.debug("Initialized EntityServiceRegistry total [{}] entries", entityDaoServicesMap.size());
     }

dao/src/test/java/org/thingsboard/server/dao/service/EntityServiceRegistryTest.java

@@ -20,6 +20,7 @@ import org.junit.Assert;
 import org.junit.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.dao.calculated_field.CalculatedFieldService;
 import org.thingsboard.server.dao.entity.EntityDaoService;
 import org.thingsboard.server.dao.entity.EntityServiceRegistry;
 import org.thingsboard.server.dao.rule.RuleChainService;
@@ -44,4 +45,8 @@ public class EntityServiceRegistryTest extends AbstractServiceTest {
         Assert.assertTrue(entityServiceRegistry.getServiceByEntityType(EntityType.RULE_NODE) instanceof RuleChainService);
     }
 
+    @Test
+    public void givenCalculatedFieldLinkEntityType_whenGetServiceByEntityTypeCalled_thenReturnedCalculatedFieldService() {
+        Assert.assertTrue(entityServiceRegistry.getServiceByEntityType(EntityType.CALCULATED_FIELD_LINK) instanceof CalculatedFieldService);
+    }
 }